LG Display isn’t the only company to have a flexible e-paper display that looks ready to market. Sony has used the Eco-Products 2010 trade show in Japan to demonstrate its own version.

While LG managed a 19″ display, Sony has gone with a much more modest 13.3″ version. Regardless of size, the important feature is the flexibility, allowing for a more newspaper/magazine-like experience when ready rather than a rigid hard case.

Although Sony has shown flexible displays before, this is a brand new solution that uses E Ink’s e-paper technology meaning it will be low power. What we don’t know is what resolution the flexible display is capable of, but just from the image above it looks more than capable of being a good e-reading screen.

Sony isn’t saying when it expects to, or whether it even intends to release this display on the market. The frame it was housed in at the trade show suggests there are still some issues to work out, such as how to include a battery without compromising on the flexibility.